from bs4 import BeautifulSoup
html_doc = """
<html><head><title>The Dormouse's story</title></head>
<body>
<p class="title"><b>The Dormouse's story</b></p>

<p class="story">Once upon a time there were three little sisters; and their names were
<a href="http://example.com/elsie" class="sister" id="link1">Elsie</a>,
<a href="http://example.com/lacie" class="sister" id="link2">Lacie</a> and
<a href="http://example.com/tillie" class="sister" id="link3">Tillie</a>;
and they lived at the bottom of a well.</p>

<p class="story">...</p>
"""
soup = BeautifulSoup(html_doc, 'lxml')
# print(soup)
# print(soup.prettify())

# print(soup.title)
# print(soup.title.name)
# print(soup.title.string)
# print(soup.title.parent.name)
# find 提取第一个
# find_all 提取所有的
urls=soup.find_all('a')
for u in urls:
    # print(u)
    # print(u.text)
    # print(u['href'])
    # print(u['class'])
    print(u['id'])










